ways and concrete bridges, drainage systems, wharves and terminals; industrial and municipal sanitation, and industrial village and city planning.

Sanitary Motor Sweeper

An up-to-date, noiseless, sanitary motor sweeper that sprinkles, sweeps and collects the street dirt all in one operation is described in a recent booklet issued by the Austin Manufacturing Company of Chicago. The equipment includes a large water tank, capacity 150 gallons, and a spraying equipment sufficiently in front of the broom to give the water enough time to penetrate the dirt before sweeping. The Austin motor sweeper moistens the dirt, sweeps it upon a carrier, and conveys it to an ample receptacle without creating dust. When the receptacle is full, it carries the refuse to a dumping point. All this work is accomplished by one man, who needs no preliminary training other than driving a motor truck. It is claimed for this sweeper that it raises no dust, and so can be used to advantage in the daytime, and that it is so noiseless in action that it may be used in residence districts without the slightest disturbance, thus permitting 24-hour service.

A Municipal Exposition in the Grand Central Palace

With the signing of the Peace Treaty and the gradual adjustment of peace conditions to the world's big business, a new day has dawned for American industries, and one of the big factors in establishing a bigger world commerce for American industries is the Merchants and Manufacturers Exchange of New York. This new enterprise has taken over the Grand Central Palace for the purpose of turning it into a mammoth trade clearing-house. It will consist of eight or more permanent industrial expositions, one of which is to be the International Exposition of Municipal Equipment. It is planned to have this Expo

sition embrace all that is best and most up-todate in equipment and utilities along every line of municipal activity. It is an initial opportunity to bring together manufacturer and buyer, and to put American municipal products before the world's buyers at a minimum overhead cost.

The Merchants and Manufacturers Exchange of New York is owned and controlled by the Nemours Trading Corporation, of which Alfred I. DuPont is President. This corporation has branches in all leading cities thruout the world, consisting of nineteen branch offices and 3,000 foreign selling agencies. Mr. DuPont, foreseeing the advantage to American business in making America the center of world commerce, conceived the idea of leasing Grand Central Palace as a great trade mart. The Merchants and Manufacturers Exchange will use eight to twelve floors for permanent industrial expositions, while the four lower floors will be used for short-term expositions of various sorts.

The assembling of the Municipal Exposition, which promises to be one of the most interesting in the Palace, will be in charge of Jeanne Carpenter as Director. Mrs. Carpenter, who is co-author of "Municipal Housecleaning," has had years of experience in municipal work. All communications should be addressed to the Director, International Municipal Exposition, room 421, 405 Lexington Ave., New York.

The Good Roads Machinery
Company Opens Chicago Office

On and after July 1, 1919, The Good Roads Machinery Company will maintain a main selling office in Chicago, Ill., located in room 1203, Tower Building, Michigan Boulevard and Madison street. Since this company was first organized in 1898 it has maintained a large sales office at Fort Wayne, Ind. This office will be continued on a small scale for the present at least, but the main Western selling office will be located at Chicago. D. L. Philips,

former manager of the Boston office, will be in charge of the new Chicago office. The Road Around the Ashokan Reservoir

The front cover of this month's Town and County Edition of THE AMERICAN CITY shows part of the highway which surrounds the Ashokan Reservoir, one of the largest reservoirs supplying the population of New York City with water. When the city of New York purchased the large acreage required for the construction of the Ashokan Reservoir in the Catskill Mountains just west of Kingston. N. Y., it became necessary to replace a number of the state and county highways with a road that would entirely surround the new reservoir. This new road, 32 miles long, was constructed of Texaco asphaltic concrete, furnished by the Asphalt Sales Department of The Texas Company during the latter part of 1913 and early in 1914.

The road was built by the Board of Water Supply of New York City, and Professor A. H. Blanchard, of Columbia University, and George W. Tillson, Consulting Engineer for the Borough of Brooklyn, were the consulting engineers retained by the Board for the work. Because of the invigorating air, the beautiful mountain scenery, and the smooth highway, the road around the Ashokan Reservoir is much traveled by automobilists on pleasure trips. The Reservoir is one of the largest reserve water storage basins in the world and is considered one of the greatest feats of modern engineering.

Changes in Staff of Morris
Knowles, Inc.

Morris Knowles, Inc., Engineers, of Pittsburgh, Pa., announce the completion of their work for the U. S. War Department as supervising engineers at Camp Meade, Md., and Camp McClellan, Ala.; the conclusion of the engagement of Mr. Morris Knowles as Chief Engineer of the Housing Department, the Emergency Fleet Corporation, U. S. Shipping Board; the return of Capt. Maurice R. Scharff after eighteen months of service with the Corps of Engineers in France; the addition to the staff of Mr. Charles M. Reppert, formerly in charge of the Division of Design in the Bureau of Engineering, Department of Public Works, Pittsburgh, and more recently Deputy Chief Engineer of the Housing Department, Emergency Fleet Corporation, U. S. Shipping Board; and the transfer to the Pittsburgh office of Mr. A. B. Hargis, formerly Assistant to the City Engineer, Birmingham, Ala., and latterly Deputy Chief Engineer with Morris Knowles, Inc., at Camp McClellan.

Eastern Paving Brick Ma ufacturers' Ass'n Opens New Offices

William C. Perkins, Chief Engineer, Eastern Paving Brick Manufacturers' Association, formerly with the Dunn Wire-Cut Lug Brick Company, Conneaut, Ohio, who a few months ago was made Chief Engineer of the above

Association, announces that Association offices have been opened at 1019 Lincoln Building, City Hall Square, Philadelphia, Pa. The Association will be glad to furnish information at any time concerning the construction of brick pavements or roads.

Test Your Sand

If you are an architect or an engineer supervising concrete construction, have you any means of checking the quality of concrete that is going in, or are you leaving it wholly to chance? "Better be safe than sorry," is the advice of Kolesch & Co., 138 Fulton Street, New York, manufacturers of the Universal sand tester. This te ter furnishes a quick, simple, easy and accurate method of checking up the quality of a sand, for use in concrete for walls, foundations, dams, bridges, roads, sidewalks, reservoirs or other concrete products. The apparatus consists of a graded series of standard mesh screens (Nos. 6, 10, 20, 35 and 65), in a watertight casing; a series of glass vials communicating with the screens; and means for holding and making a graphical record of tests. The Universal sand tester is also adapted for measuring the size and uniformity coefficient of filter bed sands. Prominent Municipal Engineers Become Associated in Private Practice

Small Portable Sand Tester for Concrete Work

Cards have recently been issued announcing that Rudolph F. Miller, formerly Superintendent of Buildings for Manhattan, and George E. Strehan, formerly Assistant Engineer in the Bureau of Buildings, have become associated in the general practice of engineering at 112 West Forty-second Street, New York City. The announcement states that this new firm is qualified to design building construction, masonry, structural steel, reinforced concrete and foundations, to conduct soil examinations and tests of materials, to make inspections and surveys, and to arbitrate disputes. They are prepared to undertake the formulation or revision of building laws and work involving city planning.

Detecting the Size of a Water Leak

A very interesting 36-page booklet issued by the Pitometer Company, 55 Duane Street, New York City, gives a most excellent series of illustrations, descriptions and advice regarding the use of the Cole Pitometer system in waterworks surveys. Copics of this booklet may be secured by writing the Pitometer Company and asking for Bulletin No. 5.